Toy submarine boat.



LEHMAN; or NEW YORK N- Y? Be -it known that I ,k MtLToNW. LEHMAN,

' a citizenofl theUnited States,j 'and -ja resition.1.;.- y .l

` This* invention elatesjto 'games and toys and hisparticularreference to toygboats. Among. thefpbjects i.the inyentlon 1s to providea-cheap a attractive;lmitatlon of aSubmarneboat-f to submerg Q automatically'f` and then subsequently Lriszg-to andgloatfupon the surface by acontinuatio'n-lof-thevsame automatic operation.

Anotherfobj voiftlie';in izrntioniis provide a simpletoy.y or contriyance adapted to teach boysandothers a lnumber 'of the com mon-V or welliestablished Lprinciples of physics, having@ referenceparticularly to the buoyancy? Cf. Wetfland the Vaction 0f prof pellers.upon namigablevessels;j'- v llVithj the@v foregoing Iand' k other objects 1n view,'tl 1e' injentionconsistsfin the `arrangement Vand y{comb/ination' of- 1 parts hereinafter described l and 'claimed, and. while. the 1nventionf is not restricted vto they eX act details of construction-- disclosed herein,` still vfor the Purpose of@illustrating-?Practical embodl# ment thereof@referencei'is'had'tothe accompanyingdrawngsni which like' rference, charactersfdesignte hesame parts 1n the Figure Lisa sideeleVationof-fa preferred movementgpf--pthefsame yesselrgtoward the surface.; 'isa side-elevation indicating rthe po sition ofthe boatljust'*at the- The hullfv or',` bodylO" of the fboat is preferably made` top simulate 'asl much as. possible the formgof a; stand d I:submarine boathav- WTOYSUBMBINEBOAT. Y

A 'l .fjslpcictionjof Letters lacenivzk l Applicatitnfieanovlember 2,1915. serial No. 59,19%;

-ing atapered orpointedfboyif i" 4This'V late 13 is'ttedz'adjustably byany 1 l Vsuitab emeans alongthe bottom 4of the hull.

. following-is;afull; clear, and' exact descrip- K y y the bow andstern .andjtherebyma ng-it,

Iorz conyeni'ence a'ndmsimplicity of; construe? 'i Y tion I providea saw kerf 14,1engthwise of 'e. same being `designed "be xedfand held by nectediin such a manner asto bea11`tomati3 callyreleasedfrom vthefboatfwhen the botkstriking upon thev` bottom Will jcal1' se the y sinker to beautomatically released ,from gthe`,l 1 n i' fore', serves -to automatically sinkthenboat; #5 i 'and provide for its rei-floating' inr acontinuf 12. The keieliofv the boat consists Vrefefr'ably of a atplate-like member T13-fo "suilicie'nt; weight to maintain the'fboat'-inupriglitfposition in the water whethersubmerged for not. 155` possiblellto vary l theV anglesatjwhich the 00j boat'r W111 submerge or 'frise in 'theVwaten the bottomfofthe hull andjpoftawidth cor?" responding to thethicknessfof the plate 1365 and at any point alongwhich theplate may Y rictioui'g` At. 15:1l showl asinker made` preferably: offmetal and adapted to be carried ,by the f boat --While it is..to. be submerge'diand con-f7()- tom is-reached,thereby setting the-boat free 1- w toilo'at Aor rise towardfthe .surfaceof the Q waten The sinkerjmaybe connectedto-the 76 i boat in this mannerby Vany s uitable -mean s, buttherrneans I preferjforthis pif1`rpo se `v r 1 comprises a4 hook-or nose-16 formedion the" lower front corner orxpoint of the ykeelfplatfe 13. The sinkermay beformed Withiyalpop; 80 or eye 17 for'temporary connection with. the hook T16 iz'lhe, hook i-being; directediif forf wardly andfapproximately parallel Witlithe l bein hooked upon thefsamejloosely andthe Weig tj'of the sinker beingsulicient tooyer-y come the buoyant actio'lnuponV the boat, when theaboatyisfplacedginto the Waterjyit'h` the sinkervattacheduandfthe .boat is tlien re f i leased, it will immediatelypsinklinto-andbe-f neath the Water duetothe gravitation oi'f'V the sinker. The lowered ofgftlie-,sinker hook flasettin'g the*boatgfreeytoflqttplssi the surface of the' Water. The sinker,` there!HVV i,

011s Operation The keel 'Plateleed 'Sekelf carredherefsv by being connected to the hull preferably at approximately the middle position longitudinally thereof, the tendency of the device is to sink directly to the bottom so far as has yet been described, and when the sinker is detached, the tendency likewise is for the boat to rise approximately directly upwardly. I provide, however, suitable means to cause the boat to glide forwardly along the water at any desired angle with respect to the horizontal, such forward gliding being caused by the weight under the influence of the rudder. The rudder preferably consists of a flat plate 18 of tin or similar metal carried by the stern 12 and lying in a hori' zontal plane coinciding substantially with the longitudinal axis of the hull. This rudder, therefore, resists at the stern the downward movement of the boat under the action of the sinker, thereby causing the nose or bow of the boat to be directed downwardly at an angle determined by the relative weight or longitudinal position of the sinker and keel plate. In` any event, the lower point or edge 15 of the sinker reaches downwardly below the level of any part of the hull and always strikes the lbottom first. This lower edge 15 is preferably compara.- tively'sharp, thereby insuring that the sinker will not stand upright on the bottom but will tilt forwardly due to the movement of the boat. The momentum, however, of the boat in a downward and forward direction will cause a relative-lifting of the loop portion 17 clearing it from the hook 16 and causing the upper portion of the sinker to tilt forwardly as shown in Fig. 2, thereby setting free the boat. The buoyancy of the water will then cause the boat to rise toward the surface when again the rudder 18 retarding such buoyant action at the stern end of the boat will cause the nose or bow to project upwardly and the combined action of buoyancy and the effect of the rudder willI cause the movement to be forward as well as upward, as shown in dotted lines.

'For convenience of recovery of the sinker from the bottom of the body of water, I attach a light flexible line 19 to it and the other end of the line to the stern end of the v boat. i-

A device made in accordance with the description herein affords a great deal of amusement to boys and others interested in submarine navigation, and the principles upon which it operates are of an instructive nature.

The device may be manufactured and sold at very low cost, and the same is not likely to get out of order with the exercise of ordinary care.

1. In a toy submarine boat, the combination of a hull, a keel plate for the hull and adjustable longitudinally therealong, and means to cause the boat to sink, said sinking means being automatically detachable when engaging the bottom, permitting the boat to rise.

2. In a toy submarine boat, the combination of a hull, a keel piece secured to the bottom thereof, and a sinker detachably connected to the keel piece, said sinker being adapted to disconnect automatically when reaching the lower limit of movement, thereby setting the boat free to oat to the top of the water.

3. In a toy submarine boat, the combination of a hull, a keel piece secured to the middle portion thereof and having a for-V wardly projecting nose, and a sinker looped detachably upon and carried by said nose and .serving to cause the boat to submerge toward the bottom of the water, said sinker being automatically detached from the nose when comin to rest upon the bottom, permitting the oat to float to the surface of the water.

- 4. In a toy submarine boat, the combination of a hull, means to maintain the hull upright in all positions of movement in or through the water, a sinker carried by the last mentioned means and' automatically releasable therefrom when the lowermost point of submergence is reached, and means to cause the boat to submerge downwardly along an inclined path and subsequently rise toward the surface along an upwardly inclined path.

5. In a toy submarine boat, the combination of a hull, means to sink the hull to the bottom of the water, said sinking means being automatically detached when the bottom is reached setting the boat free to rise to the surface of the water, and a rudder secured to the hull and serving to cause the boat to move downwardly along an inclined path and subsequently rise along an upwardly inclined path.

6. In a toy submarine boat, the combination of a hull, a keel piece secured to the bottom thereof, said keel piece having a forwardly projecting nose, a sinker supported loosely upon said nose and serving to cause the boat to sink toward the bottom of the water said sinker being automatically detached from the nose when the bottom is reached, setting the boat free to rise to the surface, and a rudder secured' in fixed position in a transverse plane corresponding toA the longitudinal axis of the hull and serving to cause the boat to move in a downwardly or upwardly inclined path.

7. In a toy submarine boat, the combination of a hull, a keel piece carried thereby, a sinker detachably connected to the keel piece and becoming detached therefrom automatically when the boat reaches the bottomof the Water, anda flexible line conbeing. automatically detached when reach-d `a' meeting the sinker 'to-the hull. of u ing the bottom of the Water, thereby perm'itll i 8. In a toy submarine boat; the combting the boat to rise to the surface. Y

nation of a 11u11, means to maintain vthe 11u11 v MILTON W. LEHMAIKT.v

Ai in uprghhpostion `Whether at or below Witnesses: j -,j

the surface ofA the vwatery and means to f GEO; L. BEELR,

cause the boat to sink, said sinking means FREDERICK A. LEHMAN. 

